test: add unit tests for network, rootfs and vaccel

Add unit tests for network, rootfs and vaccel.

PR: #395
Signed-off-by: Mradul Tiwari <mradultiwari1708@gmail.com>
Reviewed-by: Irving Mondragón <mirvingr@gmail.com>
Reviewed-by: Charalampos Mainas <cmainas@nubificus.co.uk>
Approved-by: Charalampos Mainas <cmainas@nubificus.co.uk>

Author: Mysterio-17

.github/contributors.yaml

@@ -68,3 +68,6 @@ users:
   vinayakjeet:
     name: vinayakjeet
     email: vinayakjeetog@gmail.com
+  Mysterio-17:
+    name: Mradul Tiwari
+    email: mradultiwari1708@gmail.com

Makefile

@@ -231,7 +231,7 @@ test: unittest e2etest
 
 ## unittest Run all unit tests
 .PHONY: unittest
-unittest: test_unikontainers test_metrics
+unittest: test_unikontainers test_metrics test_network
 
 ## e2etest Run all end-to-end tests
 .PHONY: e2etest
@@ -249,6 +249,12 @@ test_metrics:
 	@GOFLAGS=$(TEST_FLAGS) $(GO) test $(TEST_OPTS) ./internal/metrics -v
 	@echo " "
 
+## test_network Run unit tests for network package
+test_network:
+	@echo "Unit testing in pkg/network"
+	@GOFLAGS=$(TEST_FLAGS) $(GO) test $(TEST_OPTS) ./pkg/network -v
+	@echo " "
+
 ## test_nerdctl Run all end-to-end tests with nerdctl
 .PHONY: test_nerdctl
 test_nerdctl:

pkg/network/network_test.go

@@ -0,0 +1,58 @@
+// Copyright (c) 2023-2026, Nubificus LTD
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package network
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestNewNetworkManager(t *testing.T) {
+	tests := []struct {
+		name        string
+		networkType string
+		expectedErr bool
+	}{
+		{
+			name:        "static network manager",
+			networkType: "static",
+			expectedErr: false,
+		},
+		{
+			name:        "dynamic network manager",
+			networkType: "dynamic",
+			expectedErr: false,
+		},
+		{
+			name:        "invalid network type",
+			networkType: "invalid",
+			expectedErr: true,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			t.Parallel()
+			got, err := NewNetworkManager(tt.networkType)
+			if tt.expectedErr {
+				assert.Error(t, err, "NewNetworkManager() should return an error")
+			} else {
+				assert.NoError(t, err, "NewNetworkManager() should not return an error")
+				assert.NotNil(t, got, "NewNetworkManager() should return a non-nil manager")
+			}
+		})
+	}
+}

pkg/unikontainers/rootfs_test.go

@@ -0,0 +1,157 @@
+// Copyright (c) 2023-2026, Nubificus LTD
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package unikontainers
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/urunc-dev/urunc/pkg/unikontainers/types"
+)
+
+func TestNewRootfsResult(t *testing.T) {
+	expected := types.RootfsParams{
+		Type:        "initrd",
+		Path:        "/path/to/initrd",
+		MountedPath: "/mnt/rootfs",
+		MonRootfs:   "/run/urunc/mon",
+	}
+
+	got := newRootfsResult("initrd", "/path/to/initrd", "/mnt/rootfs", "/run/urunc/mon")
+
+	assert.Equal(t, expected.Type, got.Type, "Type should match")
+	assert.Equal(t, expected.Path, got.Path, "Path should match")
+	assert.Equal(t, expected.MountedPath, got.MountedPath, "MountedPath should match")
+	assert.Equal(t, expected.MonRootfs, got.MonRootfs, "MonRootfs should match")
+}
+
+func TestRootfsSelector_TryInitrd(t *testing.T) {
+	tests := []struct {
+		name          string
+		annot         map[string]string
+		expectedFound bool
+		expectedType  string
+		expectedPath  string
+	}{
+		{
+			name: "initrd present",
+			annot: map[string]string{
+				annotInitrd: "/path/to/initrd.img",
+			},
+			expectedFound: true,
+			expectedType:  "initrd",
+			expectedPath:  "/path/to/initrd.img",
+		},
+		{
+			name:          "initrd missing",
+			annot:         map[string]string{},
+			expectedFound: false,
+		},
+		{
+			name: "initrd empty",
+			annot: map[string]string{
+				annotInitrd: "",
+			},
+			expectedFound: false,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			t.Parallel()
+			rs := &rootfsSelector{
+				annot:      tt.annot,
+				cntrRootfs: "/container/rootfs",
+			}
+
+			got, found := rs.tryInitrd()
+
+			assert.Equal(t, tt.expectedFound, found, "tryInitrd() found mismatch")
+
+			if found {
+				assert.Equal(t, tt.expectedType, got.Type, "tryInitrd() Type mismatch")
+				assert.Equal(t, tt.expectedPath, got.Path, "tryInitrd() Path mismatch")
+			}
+		})
+	}
+}
+
+func TestRootfsSelector_ShouldMountContainerRootfs(t *testing.T) {
+	tests := []struct {
+		name     string
+		annot    map[string]string
+		expected bool
+	}{
+		{
+			name: "mount rootfs true",
+			annot: map[string]string{
+				annotMountRootfs: "true",
+			},
+			expected: true,
+		},
+		{
+			name: "mount rootfs 1",
+			annot: map[string]string{
+				annotMountRootfs: "1",
+			},
+			expected: true,
+		},
+		{
+			name: "mount rootfs false",
+			annot: map[string]string{
+				annotMountRootfs: "false",
+			},
+			expected: false,
+		},
+		{
+			name: "mount rootfs 0",
+			annot: map[string]string{
+				annotMountRootfs: "0",
+			},
+			expected: false,
+		},
+		{
+			name:     "mount rootfs missing",
+			annot:    map[string]string{},
+			expected: false,
+		},
+		{
+			name: "mount rootfs empty",
+			annot: map[string]string{
+				annotMountRootfs: "",
+			},
+			expected: false,
+		},
+		{
+			name: "mount rootfs invalid",
+			annot: map[string]string{
+				annotMountRootfs: "invalid",
+			},
+			expected: false,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			t.Parallel()
+			rs := &rootfsSelector{
+				annot: tt.annot,
+			}
+
+			got := rs.shouldMountContainerRootfs()
+			assert.Equal(t, tt.expected, got, "shouldMountContainerRootfs() mismatch")
+		})
+	}
+}